APA

International Labour Office, . (1972). Code of practice for safe construction and installation of electric passenger, goods and service lifts. Established by the International Co mmittee for lift regulations (CIRA) in co-operation with the Internatio nal Labour Office. Geneva: .

Chicago

International Labour Office, . 1972. Code of practice for safe construction and installation of electric passenger, goods and service lifts. Established by the International Co mmittee for lift regulations (CIRA) in co-operation with the Internatio nal Labour Office. Geneva: .

Harvard

International Labour Office, . (1972). Code of practice for safe construction and installation of electric passenger, goods and service lifts. Established by the International Co mmittee for lift regulations (CIRA) in co-operation with the Internatio nal Labour Office. Geneva: .

MLA

International Labour Office, . Code of practice for safe construction and installation of electric passenger, goods and service lifts. Established by the International Co mmittee for lift regulations (CIRA) in co-operation with the Internatio nal Labour Office. Geneva: . 1972.